I have a strict NAT however I also have a dual NAT I have been playing this game for a long time back before Ragnorok. I never had a problem and then one day I could not play and that lasted 1 1/2 years and then finally one day i could play again. I have been playing for a while now with now issues connecting until the Friday after Thanksgiving. No it is doing the same thing as it did many moons ago and could not play. whats funny I can play any other game and I can change to unofficial servers and play also but not officials. I am about ready to give up on this game and get a refund on the season pass.